Improvement in steam-heaters



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DANIEL VAUGHAN, OF CINCINNATI, OHIO, ASSIGNOR TO HIMSELF, AUGUSTUS L.HELM, AND JOHN B. MAHONEY.

IMPROVEMENT IN STEAM-HEATERS.

Specification forming part of Letters Patent No. 117,127, dated July 18,1871.

To all whom it may concern:

Be it known that I, DANIEL VAUGEAN, of Cincinnati, Hamilton county,Sta-te of Ohio, have invented certain new and useful Improvements inSteam-Heating and Condensing Apparatus, of which the following is aspecification:

My invention relates to apparatus for heating buildings by the exposureof a steam-heated metallic surface to the air of the room to be heated,or for condensing vapor by the exposure of a large cooling-surface tothe outer air, and myinvention consists of an apparatus composed of aseries of concentric annular chambers with either cylindrical ortruncated conical sides, the chambers being connected by pipes at thebottom for the united discharge of condensed vapor, and supplied withsteam at the top. My invention further consists in a peculiararrangement of the steam-supply and steam-circulating pipes connectingthe annular chambers, by which the steam is not compelled to pass at anytime through water or condensed vapor. My invention is designed toaii'ord a great amount of very eiective heating or coolingsuriace with acheap and simple construction, and also to permit the use of steam of avery low pressure.

Figure l is a perspective view of my improved heater or condenser. Fig.2 is an axial section of the same.

The apparatus is composed principally of a number oi annular chambers, AB, concentrically surrounding a chamber, C. The chambers A B are eachbounded by cylindrical or truncated conical sides and annular top andbottom, and the chamber C may either have cylindrical or tapering sides,With'a top of any preferred form,

and a bottom, c, preferably an inverted cone. The chambers are connectedtogether by suitable stays a and supported on the legs b. The steam maybe conveyed to the chambers in separate pipes, the pipes varying in sizein proportion to the surface of each chamber; but I prefer that thesteam-connection be made in the following manner: The supply-pipe D isconnected to :the top of chamber C, the chamberCis connected .tochamberB by the pipe E near the bottom, and the chamber B connects withchamber A near the top by means of pipe F. The course of the steam inthis method of connection is shown by the arrows. The ehambersA B C areunited together at the bottom for the free discharge of water orcondensed vapor by the pipes Cr H I, the liquid being allowed finally toescape at pipe J through a steanrtrap or open pipe.

In the operation of the apparatus the steam has always a freeunobstructed passage from one chamber to the other, the collection anddis-- charge of water offering no impediment to the passage of steam. Avery low pressure of steam can, therefore, be used with absolutecertainty of its reaching all parts of the apparatus, and the pressuremay be such an infinitesimal quantity that it may be generated in somecases in a vessel having an open-topped safety water-tube to balance thepressure and prevent any excess. The condensed water may be returned tothe boiler in the usual way.

In ordinary contrivances for warming buildings by steam an enormouspressure of steam is required to prevent too great an accumulation ofcondensed water in the pipes and overcome the friction in long-corrodedpipes.

My device permits the use of tin in its construction, which is cheaperand better adapted for heating purposes than thick iron, such as is usedin pipe-heaters. Its form also makes it better adapted for throwing offa greater quantity of heated air than any device heretofore used, a veryrapid current being created in the annular spaces between the annularchambers and interior cylinder.

The apparatus may be used for condensing vapors of all kinds indistilling processes.

I claiml. 4A steam-heating or vapor-condensing apparatus, composed of aseries of annular chambers, A B, one within the other, connected andoperating substantially in the manner and for the purpose speciiied.

2. In the described combination with the chambers A B C, the pipes D E Ffor the supply and circulation of steam, and pipes Gr H I for thedischarge of water, the whole being connected and operatingsubstantially in the mannerand for the purpose specified.

In testimony of which invention I hereunto set my hand.

Witnesses: DANIEL VAUGHAN.

FRANK MILLWARD, ELITEA F. LAYMAN.

